With all the research I did years ago what I came up with is the rear dif, ring & pinion crosses with the turbo RX7 and the front dif, ring & pinion crosses with the non turbo RX7/Miata. I have both a front and rear carrier out of the axles and the rear is bigger than the front. If you want Friday I can take measurements and pics and post them here. I am sure if the rear factory limited slip would fit in the front someone (me) would allready be running one in the front. If what you bought works, please let us know how well it does off road.

Dennis

95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.